Milling machine



MILLING MACHINE v s sheets-sheet 2 Filed Jan. `2 1950 w/TA/Essss; A /NVENTo/Q; f afi? 75M? @mn I y H. o.. FLETCHER K I MILLING MACHINE Filed Jan. 2. 1930 Jan. 2,6, 1932.

3 sheets-,sheet 3 y INVENTORY MUNITE 1STA `of regular form.

PatenteclmJan. 26, 1932 f ss PATENT OFFICE;

` HENRY o. FLErcIIEmor ANsoNIA, coNNnc'TIcu'r MILLING MACHINE Application led January 2, 1930. `Serial`N'o.41"i,986.

`invention `relates more particularly to milling `machines for .forming` irregular shapes, orv proles on metal parts, `but may.l

be usedfor avarietyof operations on parts` ber th, 1929, Serial No. 416,308, and the em- H bodiments herein shown `are additional manners in which I accomplish the same purpose.`

Theembodimentsherein shown are illustrat-` ed as being mounted upon the same base and driven by the same motor and driving mech- A anism as illustrated andexplained in my ap-V plication" dated December 25, 1929. Y i Y -f Fig. 1 is a plan view of one embodiment of Vmy invention. Fig. 2 is a section taken in side elevation on line` 22, of Fig. 1. i Fig. 3 is a section taken in end elevation on line 3-f-3,"of,l `ig.` `1. Fig. 4jis a plan view of another embodiment of `my invention.

Referring to Figs. 12and 3, the

3 and 4, are adjustably clamped by means `of screws 9, and slots 10, to slides 5, and-.6, respectively.J The slide 5, reciprocates 1n: the

guide, formed in table 1, and, slide 6, reciprocates in guide 8, also formed in table 1.`

The shaft 11," driven by a motor, notshovvn,I

is connected to `shaft 12, by means of universaljoints 13, and l4,telescop`ing sleeve 15.`

and key 15a.` The worm 16, fast on shaft meshes with Worm gear 17, fast on cutter spindle 18,jon which cutter 19,'is rigidlymounted.

The shaft 12; fdrivesshaft 20,` bymeans of universal joints 21and 22, telescoping sleeve `23, and key 23a. i The `Worm 24, fast onshaft 20, meshes `vvith-vvormgear 25, fast on cutter spindle 26, on Whichcutter 27, yis rigidly mounted. j .u y The universal coupling 28, alsojdrlvenfby sleeve A31,-formedfon coupling 28. In a like fable 1; upon which the mechanism is mounted,is supported by cabinet base 2. The cutter blocks mannershaft 29,` drives the hollow shaft 32, by means of'key 33, shaft 29, being adapted to` slide ,Within shaft 32. `In turn shaft 32, drives shaft 34, by key` 35, shaft 34, being y i l, adapted to slide inv shaft 32.` Worm 37, is to increase freely mounted on shaft29, and Worm 38, is' freely mounted on `shaft 34, the Worms-37,

and 38, being driven by clutches as fully illus- .i

trated, and described 4in the previous applica- .tion` mentioned above. (See Fig. 6).

The Worms 37, and 38, mesh with Worm gears 41 and `42, respectively, which are fast on and drive'the Work spindles of headstocks 39 and 40, respectively in the same manner as illustrated in F ig.` 5, of previous mentioned application. These headstocks, 39 and 40,

`are `provided With expanding collets draw aforementioned application.

The `Worm 43, is fast on shaft 32, and meshes with vvorm gear 44, fast on shaft 45.` `The pinion 46, fastl on shaft 45, meshes With gear bolts, ejectors, and air chucks as described in f4?, fast on shaft 48.

-The speed ratio of` pinion 46, to gear 47, is

tvvoto one which causes shaft 48, to revolve half as fastas shaft 45.

`Themaster forms` 4,9 and'` 50, are fast onf.`

shaft 45, the `master,form 49, engages roll- 51, rotatablymcunted on pin 52, fast on shoe 53, which is clamped to slide 5, on- Which cutteriblock 3, is mounted. Master form-,50, engages `roll 54, rotatablylmounted on pin 55, fast in slice 56,1?vhich is clamped to slide I6, carrying cutter block 4.

As` shaft 45, revolves,` slowly turning master` forms 49k and 50, the master form 49, slowly'reciprocates cutter 19, to form Work l and 6, serving` to stock 39.` ,Cam 58, alsoengages rollr61, ro-` tatably mounted on shoe 62, which is adjustably clamped to headstock 40. the path Thepath cam 58, is fast on shaft 48,*and engages `roll 59, `rotatably mounted on shoe i `60, W'hichis adjfustably clamped to head' inotor,no`t shown, drives shaft-29, by meansVV of` keyr 3,0, 'shaftl1,29, being adapted to slide in r 57, land..1naster form 50, reciprocates cutter v p 27in a similar mannerf,the extension spring V100 attached to .slidesV 5, vpress ,rolls 51 and: 54,at all times against 63, of cam 58, is formed a. 180o dwell 64, which causes one of its engaged rolls to stand still during half of the revolution of cam 58.

During this time the master forms 49 and 50, have made a complete cycle, thus producing a complete profile on work 57.

The other 180o of path 63, of cam 58, is formed to move lthe other roll and consequently its headstock raway from and back into working relation with its corresponding cutter. Thus it will be seen that .cam 58, alternately moves the headstocks 39 and 40, so that the spindle of one has produced a complete piece of work while the other is in inoperative position. 1All-of theworking parts not herein described are fully illustrated and `described in thepreviously 'mentioned application.

Referring to Fig. 4', `the shafts 65, and 66, are driven in asimilar manner Ato shafts l12 and 20, respectively, as shown. The worms 67, fast on'shaft 65,meshes with worm gear 68, whicli-drivescutter 69;'and,1the worm 70, fast'on shafti66, meshes with worin gear 71, which drives' cutter 72 inthe same-manner that worm gear 17 and 25, drive cutters 19 and -27 respectively.

The Vshaft 73, is driven similarly to lshaft 29, and drives hollow shaft 74 and shaft 75 in a similar manner as described for shafts 32 and 34. The Vworm `76, meshing with worm gear 7 6a, drives the work spindle of headstock 77; and, worm 78,ineshing with worm gear 79, drives the spindle of headstock 80, in the same manner that gears 41 Vand 42, drive 4'the spindles of headstoclrs39 and '40. The lworm 85, yfast --on shaft 74, meshes with worm `gear 86, fast on shaftv 82.

The pinion 81, fast on shaft-82, meshes withgear 83,-faston shaft 84, with a-speed ratio of'two toone similar to shafts 45-and 48.

The master forms 87 and 88,1fast on shaft 82, operate to reciprocate 'the'headstocks 77 and r80, respectively, ain the same manner as master forms 49 and-50,0peratev to -re- "ciprocate-Acutter blocks 3'and 4, respectively,

` cutting the profile.

Thepath cam 88a is identical in construction, and operation to cam 58,?except that it operates Ito 'alternately move cutter block slides 101v and 102, carrying cutter blocks :"3 and 4, out-of and into, Working position instead of moving headstoc-ks out of and into working position. l

Vrlhe levers 89 and 90, lfulcrumedOnItable 1a, at 89a, respectively, and push blocks 91 and 92, vfast on cutter block slides 101 and 102, alternately engage levers 89 and 90, tooperate rods93-and 94, respectively, to start and vstop the work spindles of headstocks77 and 80, respectively.' The compression spring 104, serves to return rod 93, and lever 89, to their original position, thus allowing the clutch of headstock 77, to start its spindle; and, compression spring 105, serves to return rod 94, and lever 90, in the same manner to start the spindle of headstock 80. The stops 106 and 107, serve to limit the movement of levers 89 and 90, respectively, ontheir return movement.

VFrom the above it will be seen that in Fig. 1, Vthe cuttervblocksare `reciprocated to form the profile, and the headstocks alternately reciproca-tedgto separate the work from the cutters; while in Fig. 4, the opposite takes place; the'headstoclis :are reciprccated to form the proiile, and the cutters alternately reciprocated to separate them from'the work.

lt will be'evident that, when the lmachine is-Jproducing 'circular work, the master forms will be circulariny form; and, vthe headstock, or cutter block, controlled by a master vform willhave'no movement. rEherefore the master forni maybe omittedand the he'adstock, or'cutter block may 'be clamped firmly in place. l

The automatic operation of the Aair valves, airchuclls,ejectors, and the cooling'liquid, whilel notfillustrated inthis application, may be applied to the mechanism hereinshown with'equal facility toV that shown in my Vprevious application, Serial No. 416,308.

'Having explained lmy invention what il claim yas new isset forth inthe following claims:

1. In a profilemillingmachine, two mov- UV being adapted Ato'operate on the workhcld by one work spindle-and the other cutter adapted to operate onf the work` heldby the other work spindle ,means to vrotate the work and cutter spindles; automatic ymeans to move the cutter bloclrs,f1n relation to the work spindles, to cut 'f thep'rolile'; and automatic means toalternately vmovefthe h'eadstoclrs, in relation to the cutter blocks, to remove cnespindle away from operative 'relation with 'its cutter while the other work spindleis in operative relation 1C with its cutter. A

"2. "ln-a profile milling machine,two movable cutter blocks; a cutter carrying spindle rot-atablymounte'd in each cutter block;v two Y movable headstocks'; a work'h'olding spindle rotatablymounted in each'heafdstock; one cutter being adapted tooperate on theworl; held byone"r worl spindle, and the other cutter adapted'to 'operate on the worlr heldby the otherworlr spindle; means to rotate the spinl l' dles; automatic ymeans to move the headstocks, in relation to, the cutters toV 'cut'the movethe cutter blocks in relation' to they headrelation with its work spindle while the other cutter is in operative relation with its work spindle.

3. In a profile milling machine, two movableheadstocks; a workholding spindle rotatably mounted in each headstock; two movable 'cutter blocks; a cutter carrying spindle rotatably mounted in eachcutter block; one

cutter being adapted to operate on the work `held by one work spindle, and the other cutteradapted to operate on the work heldby the other work spindle; `means to `rotate the cutters; means to rotate the work spindles; automatic means tomove the headstocks in relation to cutters for cutting the profile; automatic means to alternately move the cutter blocks to move one cutter out of operative relation withV its work spindle, while the other cutter is in operativerelation with its work spindle; and automatic means to stop the rotation of the inoperative work spindle asits corresponding cutter moves out ofoperative relation, and start it again as its correspond ing cutter moves back into operative relation.`

4. In a proiile milling machine, two movable cuttery blocks; a cutter carrying spindle rotatablymounted in each cutter block; two movable headstocks; a work holding `spindle rotatably mounted in each headstock one cutf; ter being adapted to operate on the workheld `by one work spindle, and the other cutter adapted to operate on the work held by the other work spindle; means to rotate the cutter spindles; means to rotate the workspindles; t f automatic means to move the cutter blocks in relation tothe work spindles for cutting the profile; automatic means to alternatelymove Y theheadstocksto move one work spindle out of, and back into, operative relation with its "cutter while the other work spindle lis in operative relation with its cutter; and, automatic-means to stop the rotation of the inoperative work spindle as it moves out ot operative relation, and start it again as it e. moves back into operative relation with its cutter.

5. In a milling machine two movable work carrying elements and two movable cutter carrying elements arranged in pairs; one

work carrying element, and one cutter carrying element in each pair; a work holding spindle rotatably mounted in each work carrying element; a cutter rotatably mounted in each cutter carrying element; each cutter bey L ing adapted to operate on the work held by the work holding spindle of its pair; means to rotate the work holdingspindles and cutters; and; automatic `means to move the two elements of each pair relative to each otherV for cutting the profile.

holding spindle rotatably mounted in each work carrying element; a cutter rotatably `mounted on each cutter carrying element;

each `cutter beingadapted to operate on the work held by the work holding spindle of its pair; means to rotatethe work holding spindles and cutters; automatic means to movethe two` elements of each pair relative to each other for cutting the Aprolile; and automatic means to alternately move the elements of eachpair relativeto each other to separate the elements of one pair from operative relation with each other, while the elements ofthe other pair are in operative rela- `work carrying element; a cutter rotatably `mounted on each cutter carrying element; i `each cutterbeing adapted to operate on the work held :by the werk holding spindle of its pair; means to rotate the work holding spindles and cutters; automatic means to move thetwo elements of each pair relative l to eachother `for cutting the profile; automatic means to alternately move the elements of each pair relative to each other to separate the elements of one pair from operative relation with each other, and bring them back `into operative relation, while the elements of the other pair are in operative relation with each other; and, automatic means to stop therotation of the work spindle of the inoperative `work carrying element while `it `isrin inoperativerelation with` its cutter carrying element, and start said spindle'rotatingas theinoperative work carrying elements ico return to operative relation with each other.

In testimony whereof, I hereunto set my hand. Y

HENRY O. FLETCHER.

' 6; In a profile milling machine, two mov- Y,

able work carryingelements, and two movable cutter carrying elements arranged Vin pairs; one work carrying element andlone cutter carrying element 1n each pair; a work 

